Getting 'insights' for a repository on github is very straight forward (go to repository url, click 'Insights', go to any section of interest (e.g. traffic etc).
i.e.
How can we see similar stats for a github gist?
From what I can see, no, there is no traffic recorded for a Gist.
The only recent evolution regarding Gist are:
Thanks to the OP stevec's own query to GitHub, the official answer is (Sept. 2020):
I'm afraid we do not currently have this feature